Mechanistic investigation of solvent extraction based on anion-functionalized ionic liquids for selective separation of rare-earth ions
文献类型：期刊论文
| 作者 | Sun XQ ; Luo HM ; Dai S |
| 刊名 | dalton transactions
 |
| 出版日期 | 2013 |
| 卷号 | 42期号:23页码:8270-8275 |
| 关键词 | NITRIC-ACID MEDIUM CROWN-ETHERS TEMPERATURE AMERICIUM(III) COORDINATION GREENNESS EXCHANGE BEHAVIOR DILUENT MEDIA |
| ISSN号 | 1477-9226 |
| 通讯作者 | luo hm |
| 中文摘要 | in this study, solvation has been found to be a dominant mechanism in an ionic liquid (il)-based extraction system for rare earth elements (rees). trioctylmethylammonium di(2-ethylhexyl)phosphate ([toma][dehp]), an anion-functionalized il extractant, was used in 1-alkyl-3-methylimidizolium bis[(trifluoromethylsulfonyl)]imide ([c(n)mim][ntf2], n = 4, 6, 8, 10) and 1-alkyl-3-methylimidizolium bis(perfluoroethane-sulfonyl)imide ([c(n)mim][beti], n = 4, 6, 8, 10) for the separation of rees. surprisingly, a very similar extraction behavior was observed even as the carbon chain length on the il cation increased from butyl (c4) to decyl (c10). this behavior is in sharp contrast to that exhibited by the conventional molecular extractants, whose extraction efficiencies are strongly dependent on the hydrophobicity of il cations. furthermore, the addition of il cations ([c(n)mim](+)) in [c(n)mim]cl form or il anions ([ntf2](-) or [beti](-)) in li[ntf2] or li[beti] form to the aqueous phase had a minor effect on the extraction behavior of the above extraction system, ruling out the strong involvement of the ion-exchange mechanism associated with traditional il-based extraction systems. results showed that the extractabilities and selectivities of rees using [toma][dehp] in [c(10)mim][ntf2]/[beti] are several orders of magnitude better than those achieved using a conventional organic solvent, diisopropylbenzene (dipb). this study highlights the potential of developing a comprehensive il-based extraction strategy for rees separations via ionic extractants. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000319286300017 |
| 公开日期 | 2014-04-18 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/50276]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Sun XQ,Luo HM,Dai S. Mechanistic investigation of solvent extraction based on anion-functionalized ionic liquids for selective separation of rare-earth ions[J]. dalton transactions,2013,42(23):8270-8275. |
| APA | Sun XQ,Luo HM,&Dai S.(2013).Mechanistic investigation of solvent extraction based on anion-functionalized ionic liquids for selective separation of rare-earth ions.dalton transactions,42(23),8270-8275. |
| MLA | Sun XQ,et al."Mechanistic investigation of solvent extraction based on anion-functionalized ionic liquids for selective separation of rare-earth ions".dalton transactions 42.23(2013):8270-8275. |
入库方式： OAI收割
来源：长春应用化学研究所
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